27640220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 60614400

約数和(自身を除く): 32974180

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 109, 124, 155, 218, 310, 409, 436, 545, 620, 818, 1090, 1636, 2045, 2180, 3379, 4090, 6758, 8180, 12679, 13516, 16895, 25358, 33790, 44581, 50716, 63395, 67580, 89162, 126790, 178324, 222905, 253580, 445810, 891620, 1382011, 2764022, 5528044, 6910055, 13820110, 27640220]

約数ペア:

[(1, 27640220), (2, 13820110), (4, 6910055), (5, 5528044), (10, 2764022), (20, 1382011), (31, 891620), (62, 445810), (109, 253580), (124, 222905), (155, 178324), (218, 126790), (310, 89162), (409, 67580), (436, 63395), (545, 50716), (620, 44581), (818, 33790), (1090, 25358), (1636, 16895), (2045, 13516), (2180, 12679), (3379, 8180), (4090, 6758)]